Chrysanthemum plant named ‘Zanmubutter’

ABSTRACT

A  chrysanthemum  plant named ‘Zanmubutter’ characterized by its medium sized blooms with white to cream ray florets and a cream center and prolific branching; natural season flowering date September 22; blooming for a period of about 4 to 5 weeks.

Botanical designation: Chrysanthemum×morifolium Ramat.

Cultivar denomination: ‘Zanmubutter’.

RELATED CULTIVARS

This new plant cultivar ‘Zanmubutter’ is of the botanical classificationChrysanthemum×morifolium Ramat.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar ofchrysanthemum plant, botanically known as Chrysanthemum×morifoliumRamat., commercially known as a garden mum, and hereinafter referred toby the cultivar denomination ‘Zanmubutter’. ‘Zanmubutter’ is a productof a breeding and selection program for outdoor pot mums (garden mums)which had the objective of creating new cultivars with a double typeinflorescence, a natural season flowering date around September 15,blooming for a period of about 4 to 5 weeks.

‘Zanmubutter’ is a seedling resulting from a cross of the female parent17502 with the male parent 26356. Plants of the new cultivar‘Zanmubutter’ differ from plants of the parents in ray-floret color.Ray-florets of plants of the seedling are white to cream colored, whilethose of the female parent are yellow, and those of the male parent arepure white.

The new and distinct cultivar was discovered and selected as a floweringplant by Henricus Cornelius Maria Jacobs on a cultivated field inRijsenhout, The Netherlands in 2010. The first act of asexual productionof ‘Zanmubutter’ was accomplished when vegetative cuttings from theinitial selection in 2010 were propagated further in a controlledenvironment in Rijsenhout, The Netherlands. The new cultivar has beenfound to retain its distinctive characteristics through successivepropagations.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention of a new and distinct variety of chrysanthemum (ofabout 16 weeks) is shown in the accompanying drawings, the color beingas nearly true as possible with color photographs of this type.

FIG. 1 shows a plant of the cultivar in full bloom.

FIG. 2 shows the various stages of bloom of the new cultivar.

FIG. 3 shows the various stages of foliage of the new cultivar.

DESCRIPTION OF THE INVENTION

The observations and measurements were gathered from plants grown outdoor in Rijsenhout, The Netherlands, under natural day length andtemperature and planted in week 25 in 2014, receiving drip irrigation.The natural blooming date of this crop was September 22. The averageheight of the plants was 40 cm. No growth retardants were used. No testswere done on disease or insect resistance or susceptibility. No testswere done on cold or drought tolerance. This new variety produces mediumsized blooms with white ray florets and a cream center blooming for aperiod of about 4 to 5 weeks.

From the cultivars known to inventor the most similar existing cultivarin comparison to ‘Zanmubutter’ is ‘Zanmuglow’ (U.S. Plant Pat. No.22,617). When ‘Zanmuglow’ and ‘Zanmubutter’ are being compared thefollowing difference is noticed: The difference of ‘Zanmuglow’ and‘Zanmubutter’ are (1) Plant vigour. And (2) Natural season bloomingdate. (1) Plants of ‘Zanmubutter’ are larger than those of “Zanmuglow’.(2) Plants of ‘Zamubutter’ flower later in the season than those of‘Zanmuglow’.

The following is a description of the plant and characteristics thatdistinguish ‘Zanmubutter’ as a new and distinct variety.

The color designations are taken from the plant itself. Accordingly, anydiscrepancies between the color designations and the colors depicted inthe photographs are due to photographic tolerances. The color chart usedin this description is: The Royal Horticultural Society Colour Chart,edition 2001.

TABLE 1 Botanical Description of Chrysanthemum × morifolium Ramat.‘Zanmubutter’ Bud Size: Small; cross-section 4 mm, height 3 mm Shape:Round Texture: Pubescent Outside color: Greyed-green 191A PhyllariesNumber: 24, arranged in 3 rows Shape: Elliptic Apex: Acute Base:Truncate Margin: Entire Color: Upper side: Green 143B Lower side: Green139B Length and width: 3-4 mm; 1.5-2 mm Texture: PubescentInflorescences Type: Double Height: 1.5 cm Diameter: 4 cm Pedunclelength: 5 cm Peduncle color: Green 138A Peduncle diameter: 2 mm Peduncletexture: Pubescent Number per branch: About. 5-7 inflorescences Durationof flowering: about 4 to 5 weeks Seeds: Produced in small quantities,ovate, Greyed-brown 199A, length 1.5 mm, diameter 0.5 mm Fragrance:Faint chrysanthemum odor Color inflorescences Center of inflorescence(disc florets): Immature stage: White 155A; Mature stage: Green-Yellow1B Color of upper side of ray florets: White 155D Color of lower side ofray florets: White 155D Tonality from distance: A garden mum with whiteblooms and a cream center Color of ray florets after aging of White 155Dthe plant: Ray florets Texture: Upper and lower side smooth Number:180-190 Shape: Elliptic Apex: Dentate Base: Attenuate Cross-section:Flat Longitudinal axis: Straight Length of corolla tube: 3 mm Ray floretmargin: Entire Ray floret length: 1.2-2 cm Ray floret width: 1-5 mmRatio length/width: High Disc florets Disc diameter: 4 mm Distributionof disc florets: Few, only visible in mature stage of inflorescenceShape: Funnel shaped Color: Yellow-green 145C at base to Green Yellow 1Bat apex Length: 3 mm Diameter: 1 mm Receptacle Color: Yellow-green 145DShape: Domed raised Height: 3 mm Diameter: 3 mm Reproductive OrgansAndroecium: Present on only disc florets Stamen length: 3 mm Stamencolor: Yellow-green 144A Anther color: Yellow 2A Pollen: Moderate amountPollen color: Yellow 12A Gynoecium: Present on both ray and disc floretsStyle color: Yellow-green 154C Style length: 4 mm Stigma color: Yellow7A Stigma width: 1 mm Ovary: Enclosed in calyx Plant Form: Grown as aspray type pot mum, outdoor raised and mounded Growth habit: Sphericalshape Growth rate: Vigorous Height: 40 cm Width: 55-60 cm Stem color:Greyed-brown 199A Stem strength: weak Stem brittleness: brittle Stemanthocyanin coloration: absent Internode length: 1-1.5 cm Length oflateral branch: From top to bottom 20 cm Lateral branch color: Green138A Lateral branch, attachment: Weak Lateral branch diameter: 2 mmBranching (average number of Prolific with 7 breaks after pinchinglateral branches): Natural season blooming date: September 22 (week 39)Foliage Leaf color: Upper side: Green 139A Lower side: Green 139B Colormidvein: Upper side: Yellow-green 147D Lower side: Yellow-green 148DSize: Small; length 2.2-5.5 cm, width 1.2-2.7 cm Quantity 22-25 (numberper lateral branches): Shape: Elliptic Texture upper side: Sparselypubescent Texture under side: Pubescent Venation arrangement: PinnateShape of margin: Serrated Shape of base of Rounded sinus between laterallobes: Margin of sinus between Diverging lateral lobes: Shape of base:Attenuate Apex: Mucronulate Petiole length: 0.3-1 cm Petiole diameter:1-2 mm Petiole color: Yellow-green 147D

TABLE 2 Differences with the comparison variety, when grown underidentical conditions ‘Zanmubutter’ ‘Zanmuglow’ Plant height 40 cm 30 cmPlant width 55-60 cm 50 cm Natural season blooming date Week 39 Week 38

I claim:
 1. A new and distinct chrysanthemum plant named ‘Zanmubutter’as described and illustrated.